Selective Synthesis of Epolactaene Featuring Efficient Construction of Methyl (<i>Z</i>)-2-Iodo-2-butenoate and (2<i>R</i>,3<i>S</i>,4<i>S</i>)-2-Trimethylsilyl-2,3-epoxy-4-methyl- γ-butyrolactone
作者:Ze Tan、Ei-ichi Negishi
DOI:10.1021/ol060856u
日期:2006.6.1
see text] (+)-Epolactaene was synthesized in 14 steps in the longest linear sequence. The synthesis is highlighted by a highly efficient preparation of the lactone intermediate 4, which only requires three steps from the commercially available (S)-3-butyn-2-ol. It also features a fully stereocontrolled synthesis of the intermediate 9, which was constructed through the use of Zr-catalyzed methylalumination